Attack Pheromones is a Continuous Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Attack Pheromones is Unlimited.
YGOPRODeck lists Attack Pheromones for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Attack Pheromones appears in Stardust Overdrive (SOVR-EN048) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Attack Pheromones is about $0.11 on TCGPlayer (prices change frequently).
